Power Steering Pump Pullys

[Tumbleweed13]

If you switch from a 4.25" dia. pulley. To a 4.5" pulley. Does the bigger pulley increase the pressure, and/or flow rate of the pump?

[6spdYJ]

It only slows down the pump relative to the engine RPM. The pump itself does not physically change. You may notice a bit more effort needed to turn the wheels at lower RPM, but you may notice a bit less load on the engine and slightly more available torque. Search underdrive pulleys. Street/strip guys have been doing it for a long time.

[aw12345]

If you switch from a 4.25" dia. pulley. To a 4.5" pulley. Does the bigger pulley increase the pressure, and/or flow rate of the pump?

nope buy the 4" pulley , or drill the hole in the pressure fitting of the pump larger/ do not go bigger than 5/32"On my buggy I ditched the stock pump, used Jeep pump with a drilled out fitting and a larger intake fitting made it steer adequate.On the plus side if it doesn.t work I can bolt a PSC pump in it's place without modification. What do you use as a pump?GM pump with a drilled fitting should work for ya

[Tumbleweed13]

I have a TC style pump now, thats been mod'd by Performance Offroad Steering. Based on what you 2 have said, looks like I need a smaller pulley. My issue, is that it can be a bit tough to turn, at low RPM. I'll see if I can find a 4' pulley.

[aw12345]

PSC sells a 4" pulley, is what I bought for my buggy